Using Macro Template In Macro Expansion: C Program
In this video tutorial lets see how we can make use of a macro template in a macro expansion.
Objective
We define PI in a macro, and then we use PI in expansion of another macro.
We shall also modify the same program to make use of constant M_PI present in math.h library file instead of macro template PI.
Note: M_PI is also a macro inside math.h library file.
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